QuestyCaptcha.class.php

   1 <?php
   2
   3 /**
   4  * QuestyCaptcha class
   5  *
   6  * @author Benjamin Lees <emufarmers@gmail.com>
   7  * @addtogroup extensions
   8  */
   9
  10 class QuestyCaptcha extends SimpleCaptcha {
  11
  12         /** Validate a captcha response */
  13         function keyMatch( $answer, $info ) {
  14                 return strtolower( $answer ) == strtolower( $info['answer'] );
  15         }
  16
  17         function addCaptchaAPI( &$resultArr ) {
  18                 $captcha = $this->getCaptcha();
  19                 $index = $this->storeCaptcha( $captcha );
  20                 $resultArr['captcha']['type'] = 'question';
  21                 $resultArr['captcha']['mime'] = 'text/plain';
  22                 $resultArr['captcha']['id'] = $index;
  23                 $resultArr['captcha']['question'] = $captcha['question'];
  24         }
  25
  26         function getCaptcha() {
  27                 global $wgCaptchaQuestions;
  28                 return $wgCaptchaQuestions[mt_rand( 0, count( $wgCaptchaQuestions ) - 1 )]; // pick a question, any question
  29         }
  30
  31         function getForm() {
  32                 $captcha = $this->getCaptcha();
  33                 if ( !$captcha ) {
  34                         die( "No questions found; set some in LocalSettings.php using the format from QuestyCaptcha.php." );
  35                 }
  36                 $index = $this->storeCaptcha( $captcha );
  37                 return "<p><label for=\"wpCaptchaWord\">{$captcha['question']}</label> " .
  38                         Xml::element( 'input', array(
  39                                 'name' => 'wpCaptchaWord',
  40                                 'id'   => 'wpCaptchaWord',
  41                                 'tabindex' => 1 ) ) . // tab in before the edit textarea
  42                         "</p>\n" .
  43                         Xml::element( 'input', array(
  44                                 'type'  => 'hidden',
  45                                 'name'  => 'wpCaptchaId',
  46                                 'id'    => 'wpCaptchaId',
  47                                 'value' => $index ) );
  48         }
  49
  50         function getMessage( $action ) {
  51                 $name = 'questycaptcha-' . $action;
  52                 $text = wfMsg( $name );
  53                 # Obtain a more tailored message, if possible, otherwise, fall back to
  54                 # the default for edits
  55                 return wfEmptyMsg( $name, $text ) ? wfMsg( 'questycaptcha-edit' ) : $text;
  56         }
  57
  58         function showHelp() {
  59                 global $wgOut, $ceAllowConfirmedEmail;
  60                 $wgOut->setPageTitle( wfMsg( 'captchahelp-title' ) );
  61                 $wgOut->addWikiText( wfMsg( 'questycaptchahelp-text' ) );
  62                 if ( $this->storage->cookiesNeeded() ) {
  63                         $wgOut->addWikiText( wfMsg( 'captchahelp-cookies-needed' ) );
  64                 }
  65         }
  66 }